Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6fbc915ef7e8e17…

MALICIOUS

PDF

70.5 KB Created: 2021-09-01 21:14:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 06ea92836515b189a8359364c17b4046 SHA-1: e7ec8ce2700425c1c9b2570d801c131335c10d5d SHA-256: c6fbc915ef7e8e17fa70eb42b8fd8d9feb71a5b458f5cde17b8d8ba4a45bc05d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to compromised websites, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to lure users to malicious content or further stages of an attack. No scripts were extracted, but the structure and URL patterns are consistent with phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ae12acecf---nevegugewunozakasafe.pdf In PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/4jbcu18vk4ab0j9g0g106uhhf7/janupepasinatekuzo.pdfIn PDF document text
    • http://hanboo.cn/Uploads/file/2021061204004670554.pdfIn PDF document text
    • http://obasekiestates.com/UserFiles/file/70631798145.pdfIn PDF document text
    • http://fence-alarm.com/userfiles/files/judatepa.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/1fc44bf4a424996f807e4c39b3382fde/47599996329.pdfIn PDF document text
    • http://cl-pub.com/files/files/27693531514.pdfIn PDF document text
    • https://sinarwaja.com/account/files/zuraralitamuwaruvadod.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092a17540094---dumete.pdfIn PDF document text
    • http://happyland-nsk.net/ckfinder/userfiles/files/votagututovumo.pdfIn PDF document text
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/5sscfgjg9m61loljnbl44bd7e9/83595862587.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607a79e52f5b1---56312317584.pdfIn PDF document text
    • https://investmentskillsgroup.com/images/userfiles/file/27479888909.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/6eae631b0b4df6ca51eb20930b4d2bfa/42323040138.pdfIn PDF document text
    • http://99hospitalitygroup.com/ckfinder/userfiles/files/5599743333.pdfIn PDF document text
    • http://proclima-membranes.ru/userfiles/file/40203725145.pdfIn PDF document text
    • http://alvasari.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0f9385b704---logegegolasine.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0109f7b5f3---bijewufepovanusukopuxosev.pdfIn PDF document text
    • https://pinotcar.com/wp-content/plugins/super-forms/uploads/php/files/7085b70caba327d31892dca084209cd8/gulewevove.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/ziwilobipaperesakivikoka.pdfIn PDF document text
    • https://museuminiaturesbesalu.com/files/18266445769.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160bda29905850---tarovixexirasorakexe.pdfIn PDF document text
    • https://humantouchtranslations.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16074960cbe369---popodevemilifedufil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=preview+combine+jpegs+into+pdfPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dba6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA6 17272 bytes
SHA-256: e11607c79f12b9202d0e4dc4a3ae74d10c7794515998014e593cae8efa321d54

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